Steroidal adamantates



United States Patent 3,501,508 STEROIDAL ADAMANTATES Arvin Pranlal Shrolf, Piscataway, N.J., assignor to Ortho Pharmaceutical Corporation, a corporation of New ersey No Drawing. Filed Jan. 12, 1967, Ser. No. 608,728 Int. Cl. C07c 169/12, 167/128; A61k 17/06 US. Cl. 260-3975 3 Claims ABSTRACT OF THE DISCLOSURE The compounds herein are adamantate esters of 17aethynyl-19-norandrost-4-en-3-one-175-01 and its 3-oxirne and 3-oxime esters. They are antilittering agents.

The present invention relates to adamantate esters of 17ot-ethynyl-19-norandrost-4-en-3-one-17,8-01 and to the 3-oxime and 3-oxime esters thereof.

In my copending applications, U.S. Ser. No. 502,384 filed Oct. 22, 1965 now abandoned, and US. Ser. No. 563,081 filed July 6, 1966 now U.S. Patent No. 3,437,674, there are disclosed a number of oxime esters of l9-norandrostene.

The compounds of the present invention have the general formula:

wherein R is oxygen or NOR, wherein R is hydrogen or lower acyl.

The compounds of the invention when given subcutaneously possess long-lasting antilittering activity, but they are neither progestational nor anti-ovulatory agents.

EXAMPLE I 17a-ethynyl-19-norandrost-4-en-3-one-17fi-ol-adamantate A 240 my Calcd. for C H O (percent): C, 80.83; H, 8.75. Found (percent): C, 81.06; H, 8.81.

EXAMPLE II 17x-ethynyl- 17 piadamantoxy-19-norandrost- 4-en-3-one oxime A mixture containing 1.0 gm. of 17a-ethynyl-19-norandrost-4-en-3-one-17 3-01 adamantate as prepared by the method of Example I, 1.0 gm. of hydroxylamine hydrochloride and 20 ml. of pyridine is heated on a steam bath for one-half hour. It is cooled and poured over an excess of ice and water. The precipitates thus formed are collected by filtration and recrystallized from methyl alcohol to yield 17a-ethynyl-l7p-adamantoxy 19-n0randrost-4-en-3-one oxime having a melting point of 191- 7 3,501,508 Patented Mar. 17, 1970 "ice was? 2 9 Calcd. for C H NO O.5H O (percent): C, 76.85; H, 8.74; N, 2.90; O, 12.02. Found (percent): C, 76.62; H, 8.77; N, 2.97; O, 11.87.

17a-ethynyl l7/3-adamantoxy 19-norandrost-4-en-3- one oxime, prepared by the method of Example II may be converted to an oxime ester by esterifying the oxime with an appropriate acid anhydride, such as acetic anhydride, propionic anhydride, n-valeric anhydride, caprylic anhydride, benzoic acid anhydride, salicyclic acid anhydride, etc.

The compounds of the invention are antilittering agents, with long-lasting effectiveness when given subcutaneously. The compounds are tested by the following procedure:

Female rats of known fertility are injected once subcutaneously with the compound under test in sesame oil. Seven days after the injection, the female rats are cohabited with male rats until pregnancy occurs.

EXAMPLE III Ten female rats were injected subcutaneously one with 6.4 mg./kg. of body weight of 17a-ethynyl-19-nor-4-androsten-17/3-ol-3-one adamantate. Seven days after injection, the female rats were cohabited with 4 male rats. All females became pregnant 55 days following first cohabitation.

EXAMPLE IV wherein R is selected from the group consisting of hydrogen and a lower hydrocarbon carboxylic acyl group.

2. 17a-ethynyl 17B adamantoxy-19-norandrost-4-en- 3-one oxime according to claim 1.

3. N-acetoxy-lh-ethynyl 17B adamantoxy-19-norandrost-4-en-3-one oxime according to claim 1.

References Cited UNITED STATES PATENTS 3,074,979 1/ 1963 Poos et a1 260397.45 3,299,107 1/ 1967 Mazur 260397.5 3,338,925 8/1967 Fried 260-3974 3,301,880 1/1967 Vliet 260397.5 3,373,157 3/1968 Georgian et a1. 260239.55

FOREIGN PATENTS 593,087 2/ 1960 Canada.

LEWIS GOTTS, Primary Examiner ETHEL G. LOVE, Assistant Examiner US. Cl. X.R. 

